forked from lix-project/lix
sugar🍬🍭🏳️⚧️
447212fa65
This avoids C++'s standard library regexes, which aren't the same
across platforms, and have many other issues, like using stack
so much that they stack overflow when processing a lot of data.
To avoid backwards and forward compatibility issues, regexes are
processed using a function converting libstdc++ regexes into Boost
regexes, escaping characters that Boost needs to have escaped, and
rejecting features that Boost has and libstdc++ doesn't.
Related context:
- Original failed attempt to use `boost::regex` in CppNix, failed due to
boost icu dependency being large (disabling ICU is no longer necessary
because linking ICU requires using a different header file,
`boost/regex/icu.hpp`): https://github.com/NixOS/nix/pull/3826
- An attempt to use PCRE, rejected due to providing less backwards
compatibility with `std::regex` than `boost::regex`:
https://github.com/NixOS/nix/pull/7336
- Second attempt to use `boost::regex`, failed due to `}` regex failing
to compile (dealt with by writing a wrapper that parses a regular
expression and escapes `}` characters):
https://github.com/NixOS/nix/pull/7762
Closes #34. Closes #476.
Change-Id:
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|---|---|---|
| .. | ||
| value | ||
| derived-path.cc | ||
| error_traces.cc | ||
| expr-print.cc | ||
| flakeref.cc | ||
| json.cc | ||
| primops.cc | ||
| search-path.cc | ||
| trivial.cc | ||